diff --git a/.github/workflows/ci_cd.yml b/.github/workflows/ci_cd.yml
index 1b537b0..8e741c2 100644
--- a/.github/workflows/ci_cd.yml
+++ b/.github/workflows/ci_cd.yml
@@ -86,7 +86,7 @@ jobs:
           source venv/bin/activate
           # use version of ifcopenshell with desired schema parsing
           # TODO: revert to pyPI when schema parsing is published in the future
-          wget -O /tmp/ifcopenshell_python.zip "https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-311-v0.8.1-088bc20-linux64.zip"
+          wget -O /tmp/ifcopenshell_python.zip "https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-311-v0.8.1-0267e2b-linux64.zip"
           mkdir -p venv/lib/python3.11/site-packages
           unzip -d venv/lib/python3.11/site-packages /tmp/ifcopenshell_python.zip
 
diff --git a/backend/Makefile b/backend/Makefile
index e3f5ae1..be79920 100644
--- a/backend/Makefile
+++ b/backend/Makefile
@@ -13,7 +13,7 @@ install: venv
 	. $(VIRTUAL_ENV)/bin/activate && \
 	pip install --upgrade pip && \
 	pip install -r requirements.txt && \
-    wget -O /tmp/ifcopenshell_python.zip "https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-311-v0.8.1-088bc20-linux64.zip" && \
+    wget -O /tmp/ifcopenshell_python.zip "https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-311-v0.8.1-0267e2b-linux64.zip" && \
     mkdir -p $(VIRTUAL_ENV)/lib/python3.11/site-packages && \
     unzip -f -d $(VIRTUAL_ENV)/lib/python3.11/site-packages /tmp/ifcopenshell_python.zip && \
 	rm /tmp/ifcopenshell_python.zip
@@ -22,7 +22,7 @@ install-macos: venv
 	. $(VIRTUAL_ENV)/bin/activate && \
 	pip install --upgrade pip && \
 	pip install -r requirements.txt && \
-	wget -O /tmp/ifcopenshell_python.zip "https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-311-v0.8.1-088bc20-macos64.zip" && \
+	wget -O /tmp/ifcopenshell_python.zip "https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-311-v0.8.1-0267e2b-macos64.zip" && \
 	mkdir -p $(VIRTUAL_ENV)/lib/python3.11/site-packages && \
 	unzip /tmp/ifcopenshell_python.zip -d .dev/venv/lib/python3.11/site-packages && \
 	rm /tmp/ifcopenshell_python.zip
diff --git a/backend/apps/ifc_validation/tasks.py b/backend/apps/ifc_validation/tasks.py
index b1140c4..a8e6162 100644
--- a/backend/apps/ifc_validation/tasks.py
+++ b/backend/apps/ifc_validation/tasks.py
@@ -230,8 +230,7 @@ def syntax_validation_subtask(self, prev_result, id, file_name, *args, **kwargs)
     request.save()
 
     # determine program/script to run
-    check_script = os.path.join(os.path.dirname(__file__), "checks", "step_file_parser", "main.py")
-    check_program = [sys.executable, check_script, '--json', file_path]
+    check_program = [sys.executable, "-m", "ifcopenshell.simple_spf", '--json', file_path]
     logger.debug(f'Command for {self.__qualname__}: {" ".join(check_program)}')
 
     # add task
diff --git a/docker/backend/Dockerfile b/docker/backend/Dockerfile
index 2b9cc57..9ccfe92 100644
--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -37,7 +37,7 @@ RUN --mount=type=cache,target=/root/.cache \
     pip install --no-cache-dir -r /app/backend/requirements.txt && \    
     # use version of ifcopenshell with desired schema parsing
     # TODO: revert to pyPI when schema parsing is published in the future
-    wget -O /tmp/ifcopenshell_python.zip "https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-311-v0.8.1-088bc20-linux64.zip" && \
+    wget -O /tmp/ifcopenshell_python.zip "https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-311-v0.8.1-0267e2b-linux64.zip" && \
     mkdir -p /opt/venv/lib/python3.11/site-packages  && \
     unzip -d /opt/venv/lib/python3.11/site-packages /tmp/ifcopenshell_python.zip && \
     # some cleanup